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Intrusive igneous activity


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Intrusive igneous activity

  1. 1. Unit 4: Geographical Research Tectonic Activity and Hazards
  2. 2. Guess the link …
  3. 3. Lesson 8: What are the landscape impact of intrusive igneous activity? <ul><li>Learning objectives </li></ul><ul><li>To outline the range of intrusive igneous landforms </li></ul>
  4. 4. Volcanic activity in Britain <ul><li>Play video </li></ul>
  5. 5. Intrusive igneous landforms
  6. 6. Intrusive igneous activity <ul><li>Intrusion is the movement of magma underground into spaces that exist within rock strata. </li></ul><ul><li>When this magma cools and hardens, intrusive volcanic landforms are created. </li></ul><ul><li>Weathering and erosion causes these landforms to be exposed. </li></ul>
  7. 7. Batholith <ul><li>Play video </li></ul>
  8. 8. Sill <ul><li>Play video </li></ul><ul><li>Concordant = parallel to bedding planes </li></ul>
  9. 9. Dyke Discordant = across the bedding planes
  10. 10. Case study: The Isle of Arran
  11. 13. Suggested resources <ul><li>P255 – 257 OUP </li></ul><ul><li>P166-167 Byrne et al </li></ul><ul><li>Moodle resources </li></ul>
  12. 14. Next lesson …. <ul><li>The impacts of earthquakes on the landscape </li></ul>